<?php
/**
 * WordPress Administration Media API.
 *
 * @package WordPress
 * @subpackage Administration
 */

/**
 * Defines the default media upload tabs
 *
 * @since 2.5.0
 *
 * @return array default tabs
 */
function media_upload_tabs() {
    $_default_tabs = array(
        'type' => __('From Computer'), // handler action suffix => tab text
        'type_url' => __('From URL'),
        'gallery' => __('Gallery'),
        'library' => __('Media Library')
    );

    return apply_filters('media_upload_tabs', $_default_tabs);
}

/**
 * Adds the gallery tab back to the tabs array if post has image attachments
 *
 * @since 2.5.0
 *
 * @param array $tabs
 * @return array $tabs with gallery if post has image attachment
 */
function update_gallery_tab($tabs) {
    global $wpdb;

    if (!isset($_REQUEST['post_id'])) {
        unset($tabs['gallery']);
        return $tabs;
    }

    $post_id = intval($_REQUEST['post_id']);

    if ($post_id)
        $attachments = intval($wpdb->get_var($wpdb->prepare("SELECT count(*) FROM $wpdb->posts WHERE post_type = 'attachment' AND post_status != 'trash' AND post_parent = %d", $post_id)));

    if (empty($attachments)) {
        unset($tabs['gallery']);
        return $tabs;
    }

    $tabs['gallery'] = sprintf(__('Gallery (%s)'), "<span id='attachments-count'>$attachments</span>");

    return $tabs;
}

add_filter('media_upload_tabs', 'update_gallery_tab');

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 */
function the_media_upload_tabs() {
    global $redir_tab;
    $tabs = media_upload_tabs();
    $default = 'type';

    if (!empty($tabs)) {
        echo "<ul id='sidemenu'>\n";
        if (isset($redir_tab) && array_key_exists($redir_tab, $tabs))
            $current = $redir_tab;
        elseif (isset($_GET['tab']) && array_key_exists($_GET['tab'], $tabs))
            $current = $_GET['tab'];
        else
            $current = apply_filters('media_upload_default_tab', $default);

        foreach ($tabs as $callback => $text) {
            $class = '';

            if ($current == $callback)
                $class = " class='current'";

            $href = add_query_arg(array('tab' => $callback, 's' => false, 'paged' => false, 'post_mime_type' => false, 'm' => false));
            $link = "<a href='" . esc_url($href) . "'$class>$text</a>";
            echo "\t<li id='" . esc_attr("tab-$callback") . "'>$link</li>\n";
        }
        echo "</ul>\n";
    }
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param integer $id image attachment id
 * @param string $caption image caption
 * @param string $alt image alt attribute
 * @param string $title image title attribute
 * @param string $align image css alignment property
 * @param string $url image src url
 * @param string|bool $rel image rel attribute
 * @param string $size image size (thumbnail, medium, large, full or added  with add_image_size() )
 * @return string the html to insert into editor
 */
function get_image_send_to_editor($id, $caption, $title, $align, $url = '', $rel = false, $size = 'medium', $alt = '') {

    $html = get_image_tag($id, $alt, '', $align, $size);

    $rel = $rel ? ' rel="attachment wp-att-' . esc_attr($id) . '"' : '';

    if ($url)
        $html = '<a href="' . esc_attr($url) . "\"$rel>$html</a>";

    $html = apply_filters('image_send_to_editor', $html, $id, $caption, $title, $align, $url, $size, $alt);

    return $html;
}

/**
 * Adds image shortcode with caption to editor
 *
 * @since 2.6.0
 *
 * @param string $html
 * @param integer $id
 * @param string $caption image caption
 * @param string $alt image alt attribute
 * @param string $title image title attribute
 * @param string $align image css alignment property
 * @param string $url image src url
 * @param string $size image size (thumbnail, medium, large, full or added with add_image_size() )
 * @return string
 */
function image_add_caption($html, $id, $caption, $title, $align, $url, $size, $alt = '') {

    if (empty($caption) || apply_filters('disable_captions', ''))
        return $html;

    $id = ( 0 < (int) $id ) ? 'attachment_' . $id : '';

    if (!preg_match('/width=["\']([0-9]+)/', $html, $matches))
        return $html;

    $width = $matches[1];

    $caption = str_replace(array("\r\n", "\r"), "\n", $caption);
    $caption = preg_replace_callback('/<[a-zA-Z0-9]+(?: [^<>]+>)*/', '_cleanup_image_add_caption', $caption);
    // convert any remaining line breaks to <br>
    $caption = preg_replace('/[ \n\t]*\n[ \t]*/', '<br />', $caption);

    $html = preg_replace('/(class=["\'][^\'"]*)align(none|left|right|center)\s?/', '$1', $html);
    if (empty($align))
        $align = 'none';

    $shcode = '[caption id="' . $id . '" align="align' . $align . '" width="' . $width . '"]' . $html . ' ' . $caption . '[/caption]';

    return apply_filters('image_add_caption_shortcode', $shcode, $html);
}

add_filter('image_send_to_editor', 'image_add_caption', 20, 8);

/**
 * Private preg_replace callback used in image_add_caption()
 *
 * @access private
 * @since 3.4.0
 */
function _cleanup_image_add_caption($matches) {
    // remove any line breaks from inside the tags
    return preg_replace('/[\r\n\t]+/', ' ', $matches[0]);
}

/**
 * Adds image html to editor
 *
 * @since 2.5.0
 *
 * @param string $html
 */
function media_send_to_editor($html) {
    ?>
    <script type="text/javascript">
        /* <![CDATA[ */
        var win = window.dialogArguments || opener || parent || top;
        win.send_to_editor('<?php echo addslashes($html); ?>');
        /* ]]> */
    </script>
    <?php
    exit;
}

/**
 * This handles the file upload POST itself, creating the attachment post.
 *
 * @since 2.5.0
 *
 * @param string $file_id Index into the {@link $_FILES} array of the upload
 * @param int $post_id The post ID the media is associated with
 * @param array $post_data allows you to overwrite some of the attachment
 * @param array $overrides allows you to override the {@link wp_handle_upload()} behavior
 * @return int the ID of the attachment
 */
function media_handle_upload($file_id, $post_id, $post_data = array(), $overrides = array('test_form' => false)) {

    $time = current_time('mysql');
    if ($post = get_post($post_id)) {
        if (substr($post->post_date, 0, 4) > 0)
            $time = $post->post_date;
    }

    $name = $_FILES[$file_id]['name'];
    $file = wp_handle_upload($_FILES[$file_id], $overrides, $time);

    if (isset($file['error']))
        return new WP_Error('upload_error', $file['error']);

    $name_parts = pathinfo($name);
    $name = trim(substr($name, 0, -(1 + strlen($name_parts['extension']))));

    $url = $file['url'];
    $type = $file['type'];
    $file = $file['file'];
    $title = $name;
    $content = '';

    // use image exif/iptc data for title and caption defaults if possible
    if ($image_meta = @wp_read_image_metadata($file)) {
        if (trim($image_meta['title']) && !is_numeric(sanitize_title($image_meta['title'])))
            $title = $image_meta['title'];
        if (trim($image_meta['caption']))
            $content = $image_meta['caption'];
    }

    // Construct the attachment array
    $attachment = array_merge(array(
        'post_mime_type' => $type,
        'guid' => $url,
        'post_parent' => $post_id,
        'post_title' => $title,
        'post_content' => $content,
            ), $post_data);

    // This should never be set as it would then overwrite an existing attachment.
    if (isset($attachment['ID']))
        unset($attachment['ID']);

    // Save the data
    $id = wp_insert_attachment($attachment, $file, $post_id);
    if (!is_wp_error($id)) {
        wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $file));
    }

    return $id;
}

/**
 * This handles a sideloaded file in the same way as an uploaded file is handled by {@link media_handle_upload()}
 *
 * @since 2.6.0
 *
 * @param array $file_array Array similar to a {@link $_FILES} upload array
 * @param int $post_id The post ID the media is associated with
 * @param string $desc Description of the sideloaded file
 * @param array $post_data allows you to overwrite some of the attachment
 * @return int|object The ID of the attachment or a WP_Error on failure
 */
function media_handle_sideload($file_array, $post_id, $desc = null, $post_data = array()) {
    $overrides = array('test_form' => false);

    $time = current_time('mysql');
    if ($post = get_post($post_id)) {
        if (substr($post->post_date, 0, 4) > 0)
            $time = $post->post_date;
    }

    $file = wp_handle_sideload($file_array, $overrides, $time);
    if (isset($file['error']))
        return new WP_Error('upload_error', $file['error']);

    $url = $file['url'];
    $type = $file['type'];
    $file = $file['file'];
    $title = preg_replace('/\.[^.]+$/', '', basename($file));
    $content = '';

    // use image exif/iptc data for title and caption defaults if possible
    if ($image_meta = @wp_read_image_metadata($file)) {
        if (trim($image_meta['title']) && !is_numeric(sanitize_title($image_meta['title'])))
            $title = $image_meta['title'];
        if (trim($image_meta['caption']))
            $content = $image_meta['caption'];
    }

    if (isset($desc))
        $title = $desc;

    // Construct the attachment array
    $attachment = array_merge(array(
        'post_mime_type' => $type,
        'guid' => $url,
        'post_parent' => $post_id,
        'post_title' => $title,
        'post_content' => $content,
            ), $post_data);

    // This should never be set as it would then overwrite an existing attachment.
    if (isset($attachment['ID']))
        unset($attachment['ID']);

    // Save the attachment metadata
    $id = wp_insert_attachment($attachment, $file, $post_id);
    if (!is_wp_error($id))
        wp_update_attachment_metadata($id, wp_generate_attachment_metadata($id, $file));

    return $id;
}

/**
 * Adds the iframe to display content for the media upload page
 *
 * @since 2.5.0
 *
 * @param array $content_func
 */
function wp_iframe($content_func /* ... */) {
    _wp_admin_html_begin();
    ?>
    <title><?php bloginfo('name') ?> &rsaquo; <?php _e('Uploads'); ?> &#8212; <?php _e('WordPress'); ?></title>
    <?php
    wp_enqueue_style('colors');
// Check callback name for 'media'
    if (( is_array($content_func) && !empty($content_func[1]) && 0 === strpos((string) $content_func[1], 'media') ) || (!is_array($content_func) && 0 === strpos($content_func, 'media') ))
        wp_enqueue_style('media');
    wp_enqueue_style('ie');
    ?>
    <script type="text/javascript">
    //<![CDATA[
        addLoadEvent = function(func) {
            if (typeof jQuery != "undefined")
                jQuery(document).ready(func);
            else if (typeof wpOnload != 'function') {
                wpOnload = func;
            } else {
                var oldonload = wpOnload;
                wpOnload = function() {
                    oldonload();
                    func();
                }
            }
        };
        var userSettings = {'url': '<?php echo SITECOOKIEPATH; ?>', 'uid': '<?php if (!isset($current_user)) $current_user = wp_get_current_user(); echo $current_user->ID; ?>', 'time': '<?php echo time(); ?>'};
        var ajaxurl = '<?php echo admin_url('admin-ajax.php', 'relative'); ?>', pagenow = 'media-upload-popup', adminpage = 'media-upload-popup',
                isRtl = <?php echo (int) is_rtl(); ?>;
    //]]>
    </script>
    <?php
    do_action('admin_enqueue_scripts', 'media-upload-popup');
    do_action('admin_print_styles-media-upload-popup');
    do_action('admin_print_styles');
    do_action('admin_print_scripts-media-upload-popup');
    do_action('admin_print_scripts');
    do_action('admin_head-media-upload-popup');
    do_action('admin_head');

    if (is_string($content_func))
        do_action("admin_head_{$content_func}");
    ?>
    </head>
    <body<?php if (isset($GLOBALS['body_id'])) echo ' id="' . $GLOBALS['body_id'] . '"'; ?> class="wp-core-ui no-js">
        <script type="text/javascript">
            document.body.className = document.body.className.replace('no-js', 'js');
        </script>
        <?php
        $args = func_get_args();
        $args = array_slice($args, 1);
        call_user_func_array($content_func, $args);

        do_action('admin_print_footer_scripts');
        ?>
        <script type="text/javascript">if (typeof wpOnload == 'function')
            wpOnload();</script>
    </body>
    </html>
    <?php
}

/**
 * Adds the media button to the editor
 *
 * @since 2.5.0
 *
 * @param string $editor_id
 */
function media_buttons($editor_id = 'content') {
    $post = get_post();
    if (!$post && !empty($GLOBALS['post_ID']))
        $post = $GLOBALS['post_ID'];

    wp_enqueue_media(array(
        'post' => $post
    ));

    $img = '<span class="wp-media-buttons-icon"></span> ';

    echo '<a href="#" class="button insert-media add_media" data-editor="' . esc_attr($editor_id) . '" title="' . esc_attr__('Add Media') . '">' . $img . __('Add Media') . '</a>';

    // Don't use this filter. Want to add a button? Use the media_buttons action.
    $legacy_filter = apply_filters('media_buttons_context', ''); // deprecated

    if ($legacy_filter) {
        // #WP22559. Close <a> if a plugin started by closing <a> to open their own <a> tag.
        if (0 === stripos(trim($legacy_filter), '</a>'))
            $legacy_filter .= '</a>';
        echo $legacy_filter;
    }
}

add_action('media_buttons', 'media_buttons');

function get_upload_iframe_src($type = null, $post_id = null, $tab = null) {
    global $post_ID;

    if (empty($post_id))
        $post_id = $post_ID;

    $upload_iframe_src = add_query_arg('post_id', (int) $post_id, admin_url('media-upload.php'));

    if ($type && 'media' != $type)
        $upload_iframe_src = add_query_arg('type', $type, $upload_iframe_src);

    if (!empty($tab))
        $upload_iframe_src = add_query_arg('tab', $tab, $upload_iframe_src);

    $upload_iframe_src = apply_filters($type . '_upload_iframe_src', $upload_iframe_src);

    return add_query_arg('TB_iframe', true, $upload_iframe_src);
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @return mixed void|object WP_Error on failure
 */
function media_upload_form_handler() {
    check_admin_referer('media-form');

    $errors = null;

    if (isset($_POST['send'])) {
        $keys = array_keys($_POST['send']);
        $send_id = (int) array_shift($keys);
    }

    if (!empty($_POST['attachments']))
        foreach ($_POST['attachments'] as $attachment_id => $attachment) {
            $post = $_post = get_post($attachment_id, ARRAY_A);
            $post_type_object = get_post_type_object($post['post_type']);

            if (!current_user_can($post_type_object->cap->edit_post, $attachment_id))
                continue;

            if (isset($attachment['post_content']))
                $post['post_content'] = $attachment['post_content'];
            if (isset($attachment['post_title']))
                $post['post_title'] = $attachment['post_title'];
            if (isset($attachment['post_excerpt']))
                $post['post_excerpt'] = $attachment['post_excerpt'];
            if (isset($attachment['menu_order']))
                $post['menu_order'] = $attachment['menu_order'];

            if (isset($send_id) && $attachment_id == $send_id) {
                if (isset($attachment['post_parent']))
                    $post['post_parent'] = $attachment['post_parent'];
            }

            $post = apply_filters('attachment_fields_to_save', $post, $attachment);

            if (isset($attachment['image_alt'])) {
                $image_alt = get_post_meta($attachment_id, '_wp_attachment_image_alt', true);
                if ($image_alt != stripslashes($attachment['image_alt'])) {
                    $image_alt = wp_strip_all_tags(stripslashes($attachment['image_alt']), true);
                    // update_meta expects slashed
                    update_post_meta($attachment_id, '_wp_attachment_image_alt', addslashes($image_alt));
                }
            }

            if (isset($post['errors'])) {
                $errors[$attachment_id] = $post['errors'];
                unset($post['errors']);
            }

            if ($post != $_post)
                wp_update_post($post);

            foreach (get_attachment_taxonomies($post) as $t) {
                if (isset($attachment[$t]))
                    wp_set_object_terms($attachment_id, array_map('trim', preg_split('/,+/', $attachment[$t])), $t, false);
            }
        }

    if (isset($_POST['insert-gallery']) || isset($_POST['update-gallery'])) {
        ?>
        <script type="text/javascript">
            /* <![CDATA[ */
            var win = window.dialogArguments || opener || parent || top;
            win.tb_remove();
            /* ]]> */
        </script>
        <?php
        exit;
    }

    if (isset($send_id)) {
        $attachment = stripslashes_deep($_POST['attachments'][$send_id]);

        $html = isset($attachment['post_title']) ? $attachment['post_title'] : '';
        if (!empty($attachment['url'])) {
            $rel = '';
            if (strpos($attachment['url'], 'attachment_id') || get_attachment_link($send_id) == $attachment['url'])
                $rel = " rel='attachment wp-att-" . esc_attr($send_id) . "'";
            $html = "<a href='{$attachment['url']}'$rel>$html</a>";
        }

        $html = apply_filters('media_send_to_editor', $html, $send_id, $attachment);
        return media_send_to_editor($html);
    }

    return $errors;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @return mixed
 */
function wp_media_upload_handler() {
    $errors = array();
    $id = 0;

    if (isset($_POST['html-upload']) && !empty($_FILES)) {
        check_admin_referer('media-form');
        // Upload File button was clicked
        $id = media_handle_upload('async-upload', $_REQUEST['post_id']);
        unset($_FILES);
        if (is_wp_error($id)) {
            $errors['upload_error'] = $id;
            $id = false;
        }
    }

    if (!empty($_POST['insertonlybutton'])) {
        $src = $_POST['src'];
        if (!empty($src) && !strpos($src, '://'))
            $src = "http://$src";

        if (isset($_POST['media_type']) && 'image' != $_POST['media_type']) {
            $title = esc_html(stripslashes($_POST['title']));
            if (empty($title))
                $title = esc_html(basename($src));

            if ($title && $src)
                $html = "<a href='" . esc_url($src) . "'>$title</a>";

            $type = 'file';
            if (( $ext = preg_replace('/^.+?\.([^.]+)$/', '$1', $src) ) && ( $ext_type = wp_ext2type($ext) ) && ( 'audio' == $ext_type || 'video' == $ext_type ))
                $type = $ext_type;

            $html = apply_filters($type . '_send_to_editor_url', $html, esc_url_raw($src), $title);
        } else {
            $align = '';
            $alt = esc_attr(stripslashes($_POST['alt']));
            if (isset($_POST['align'])) {
                $align = esc_attr(stripslashes($_POST['align']));
                $class = " class='align$align'";
            }
            if (!empty($src))
                $html = "<img src='" . esc_url($src) . "' alt='$alt'$class />";

            $html = apply_filters('image_send_to_editor_url', $html, esc_url_raw($src), $alt, $align);
        }

        return media_send_to_editor($html);
    }

    if (!empty($_POST)) {
        $return = media_upload_form_handler();

        if (is_string($return))
            return $return;
        if (is_array($return))
            $errors = $return;
    }

    if (isset($_POST['save'])) {
        $errors['upload_notice'] = __('Saved.');
        return media_upload_gallery();
    }

    if (isset($_GET['tab']) && $_GET['tab'] == 'type_url') {
        $type = 'image';
        if (isset($_GET['type']) && in_array($_GET['type'], array('video', 'audio', 'file')))
            $type = $_GET['type'];
        return wp_iframe('media_upload_type_url_form', $type, $errors, $id);
    }

    return wp_iframe('media_upload_type_form', 'image', $errors, $id);
}

/**
 * Download an image from the specified URL and attach it to a post.
 *
 * @since 2.6.0
 *
 * @param string $file The URL of the image to download
 * @param int $post_id The post ID the media is to be associated with
 * @param string $desc Optional. Description of the image
 * @return string|WP_Error Populated HTML img tag on success
 */
function media_sideload_image($file, $post_id, $desc = null) {
    if (!empty($file)) {
        // Download file to temp location
        $tmp = download_url($file);

        // Set variables for storage
        // fix file filename for query strings
        preg_match('/[^\?]+\.(jpe?g|jpe|gif|png)\b/i', $file, $matches);
        $file_array['name'] = basename($matches[0]);
        $file_array['tmp_name'] = $tmp;

        // If error storing temporarily, unlink
        if (is_wp_error($tmp)) {
            @unlink($file_array['tmp_name']);
            $file_array['tmp_name'] = '';
        }

        // do the validation and storage stuff
        $id = media_handle_sideload($file_array, $post_id, $desc);
        // If error storing permanently, unlink
        if (is_wp_error($id)) {
            @unlink($file_array['tmp_name']);
            return $id;
        }

        $src = wp_get_attachment_url($id);
    }

    // Finally check to make sure the file has been saved, then return the html
    if (!empty($src)) {
        $alt = isset($desc) ? esc_attr($desc) : '';
        $html = "<img src='$src' alt='$alt' />";
        return $html;
    }
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @return unknown
 */
function media_upload_gallery() {
    $errors = array();

    if (!empty($_POST)) {
        $return = media_upload_form_handler();

        if (is_string($return))
            return $return;
        if (is_array($return))
            $errors = $return;
    }

    wp_enqueue_script('admin-gallery');
    return wp_iframe('media_upload_gallery_form', $errors);
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @return unknown
 */
function media_upload_library() {
    $errors = array();
    if (!empty($_POST)) {
        $return = media_upload_form_handler();

        if (is_string($return))
            return $return;
        if (is_array($return))
            $errors = $return;
    }

    return wp_iframe('media_upload_library_form', $errors);
}

/**
 * Retrieve HTML for the image alignment radio buttons with the specified one checked.
 *
 * @since 2.7.0
 *
 * @param object $post
 * @param string $checked
 * @return string
 */
function image_align_input_fields($post, $checked = '') {

    if (empty($checked))
        $checked = get_user_setting('align', 'none');

    $alignments = array('none' => __('None'), 'left' => __('Left'), 'center' => __('Center'), 'right' => __('Right'));
    if (!array_key_exists((string) $checked, $alignments))
        $checked = 'none';

    $out = array();
    foreach ($alignments as $name => $label) {
        $name = esc_attr($name);
        $out[] = "<input type='radio' name='attachments[{$post->ID}][align]' id='image-align-{$name}-{$post->ID}' value='$name'" .
                ( $checked == $name ? " checked='checked'" : "" ) .
                " /><label for='image-align-{$name}-{$post->ID}' class='align image-align-{$name}-label'>$label</label>";
    }
    return join("\n", $out);
}

/**
 * Retrieve HTML for the size radio buttons with the specified one checked.
 *
 * @since 2.7.0
 *
 * @param object $post
 * @param bool|string $check
 * @return array
 */
function image_size_input_fields($post, $check = '') {

    // get a list of the actual pixel dimensions of each possible intermediate version of this image
    $size_names = apply_filters('image_size_names_choose', array('thumbnail' => __('Thumbnail'), 'medium' => __('Medium'), 'large' => __('Large'), 'full' => __('Full Size')));

    if (empty($check))
        $check = get_user_setting('imgsize', 'medium');

    foreach ($size_names as $size => $label) {
        $downsize = image_downsize($post->ID, $size);
        $checked = '';

        // is this size selectable?
        $enabled = ( $downsize[3] || 'full' == $size );
        $css_id = "image-size-{$size}-{$post->ID}";
        // if this size is the default but that's not available, don't select it
        if ($size == $check) {
            if ($enabled)
                $checked = " checked='checked'";
            else
                $check = '';
        } elseif (!$check && $enabled && 'thumbnail' != $size) {
            // if $check is not enabled, default to the first available size that's bigger than a thumbnail
            $check = $size;
            $checked = " checked='checked'";
        }

        $html = "<div class='image-size-item'><input type='radio' " . disabled($enabled, false, false) . "name='attachments[$post->ID][image-size]' id='{$css_id}' value='{$size}'$checked />";

        $html .= "<label for='{$css_id}'>$label</label>";
        // only show the dimensions if that choice is available
        if ($enabled)
            $html .= " <label for='{$css_id}' class='help'>" . sprintf("(%d&nbsp;&times;&nbsp;%d)", $downsize[1], $downsize[2]) . "</label>";

        $html .= '</div>';

        $out[] = $html;
    }

    return array(
        'label' => __('Size'),
        'input' => 'html',
        'html' => join("\n", $out),
    );
}

/**
 * Retrieve HTML for the Link URL buttons with the default link type as specified.
 *
 * @since 2.7.0
 *
 * @param object $post
 * @param string $url_type
 * @return string
 */
function image_link_input_fields($post, $url_type = '') {

    $file = wp_get_attachment_url($post->ID);
    $link = get_attachment_link($post->ID);

    if (empty($url_type))
        $url_type = get_user_setting('urlbutton', 'post');

    $url = '';
    if ($url_type == 'file')
        $url = $file;
    elseif ($url_type == 'post')
        $url = $link;

    return "
	<input type='text' class='text urlfield' name='attachments[$post->ID][url]' value='" . esc_attr($url) . "' /><br />
	<button type='button' class='button urlnone' data-link-url=''>" . __('None') . "</button>
	<button type='button' class='button urlfile' data-link-url='" . esc_attr($file) . "'>" . __('File URL') . "</button>
	<button type='button' class='button urlpost' data-link-url='" . esc_attr($link) . "'>" . __('Attachment Post URL') . "</button>
";
}

function wp_caption_input_textarea($edit_post) {
    // post data is already escaped
    $name = "attachments[{$edit_post->ID}][post_excerpt]";

    return '<textarea name="' . $name . '" id="' . $name . '">' . $edit_post->post_excerpt . '</textarea>';
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param array $form_fields
 * @param object $post
 * @return array
 */
function image_attachment_fields_to_edit($form_fields, $post) {
    return $form_fields;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param array $form_fields
 * @param object $post {@internal $post not used}}
 * @return array
 */
function media_single_attachment_fields_to_edit($form_fields, $post) {
    unset($form_fields['url'], $form_fields['align'], $form_fields['image-size']);
    return $form_fields;
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.8.0
 *
 * @param array $form_fields
 * @param object $post {@internal $post not used}}
 * @return array
 */
function media_post_single_attachment_fields_to_edit($form_fields, $post) {
    unset($form_fields['image_url']);
    return $form_fields;
}

/**
 * Filters input from media_upload_form_handler() and assigns a default
 * post_title from the file name if none supplied.
 *
 * Illustrates the use of the attachment_fields_to_save filter
 * which can be used to add default values to any field before saving to DB.
 *
 * @since 2.5.0
 *
 * @param object $post
 * @param array $attachment {@internal $attachment not used}}
 * @return array
 */
function image_attachment_fields_to_save($post, $attachment) {
    if (substr($post['post_mime_type'], 0, 5) == 'image') {
        if (strlen(trim($post['post_title'])) == 0) {
            $post['post_title'] = preg_replace('/\.\w+$/', '', basename($post['guid']));
            $post['errors']['post_title']['errors'][] = __('Empty Title filled from filename.');
        }
    }

    return $post;
}

add_filter('attachment_fields_to_save', 'image_attachment_fields_to_save', 10, 2);

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param string $html
 * @param integer $attachment_id
 * @param array $attachment
 * @return array
 */
function image_media_send_to_editor($html, $attachment_id, $attachment) {
    $post = get_post($attachment_id);
    if (substr($post->post_mime_type, 0, 5) == 'image') {
        $url = $attachment['url'];
        $align = !empty($attachment['align']) ? $attachment['align'] : 'none';
        $size = !empty($attachment['image-size']) ? $attachment['image-size'] : 'medium';
        $alt = !empty($attachment['image_alt']) ? $attachment['image_alt'] : '';
        $rel = ( $url == get_attachment_link($attachment_id) );

        return get_image_send_to_editor($attachment_id, $attachment['post_excerpt'], $attachment['post_title'], $align, $url, $rel, $size, $alt);
    }

    return $html;
}

add_filter('media_send_to_editor', 'image_media_send_to_editor', 10, 3);

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param object $post
 * @param array $errors
 * @return array
 */
function get_attachment_fields_to_edit($post, $errors = null) {
    if (is_int($post))
        $post = get_post($post);
    if (is_array($post))
        $post = new WP_Post((object) $post);

    $image_url = wp_get_attachment_url($post->ID);

    $edit_post = sanitize_post($post, 'edit');

    $form_fields = array(
        'post_title' => array(
            'label' => __('Title'),
            'value' => $edit_post->post_title
        ),
        'image_alt' => array(),
        'post_excerpt' => array(
            'label' => __('Caption'),
            'input' => 'html',
            'html' => wp_caption_input_textarea($edit_post)
        ),
        'post_content' => array(
            'label' => __('Description'),
            'value' => $edit_post->post_content,
            'input' => 'textarea'
        ),
        'url' => array(
            'label' => __('Link URL'),
            'input' => 'html',
            'html' => image_link_input_fields($post, get_option('image_default_link_type')),
            'helps' => __('Enter a link URL or click above for presets.')
        ),
        'menu_order' => array(
            'label' => __('Order'),
            'value' => $edit_post->menu_order
        ),
        'image_url' => array(
            'label' => __('File URL'),
            'input' => 'html',
            'html' => "<input type='text' class='text urlfield' readonly='readonly' name='attachments[$post->ID][url]' value='" . esc_attr($image_url) . "' /><br />",
            'value' => wp_get_attachment_url($post->ID),
            'helps' => __('Location of the uploaded file.')
        )
    );

    foreach (get_attachment_taxonomies($post) as $taxonomy) {
        $t = (array) get_taxonomy($taxonomy);
        if (!$t['public'] || !$t['show_ui'])
            continue;
        if (empty($t['label']))
            $t['label'] = $taxonomy;
        if (empty($t['args']))
            $t['args'] = array();

        $terms = get_object_term_cache($post->ID, $taxonomy);
        if (false === $terms)
            $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);

        $values = array();

        foreach ($terms as $term)
            $values[] = $term->slug;
        $t['value'] = join(', ', $values);

        $form_fields[$taxonomy] = $t;
    }

    // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default
    // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing )
    $form_fields = array_merge_recursive($form_fields, (array) $errors);

    // This was formerly in image_attachment_fields_to_edit().
    if (substr($post->post_mime_type, 0, 5) == 'image') {
        $alt = get_post_meta($post->ID, '_wp_attachment_image_alt', true);
        if (empty($alt))
            $alt = '';

        $form_fields['post_title']['required'] = true;

        $form_fields['image_alt'] = array(
            'value' => $alt,
            'label' => __('Alternative Text'),
            'helps' => __('Alt text for the image, e.g. &#8220;The Mona Lisa&#8221;')
        );

        $form_fields['align'] = array(
            'label' => __('Alignment'),
            'input' => 'html',
            'html' => image_align_input_fields($post, get_option('image_default_align')),
        );

        $form_fields['image-size'] = image_size_input_fields($post, get_option('image_default_size', 'medium'));
    } else {
        unset($form_fields['image_alt']);
    }

    $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post);

    return $form_fields;
}

/**
 * Retrieve HTML for media items of post gallery.
 *
 * The HTML markup retrieved will be created for the progress of SWF Upload
 * component. Will also create link for showing and hiding the form to modify
 * the image attachment.
 *
 * @since 2.5.0
 *
 * @param int $post_id Optional. Post ID.
 * @param array $errors Errors for attachment, if any.
 * @return string
 */
function get_media_items($post_id, $errors) {
    $attachments = array();
    if ($post_id) {
        $post = get_post($post_id);
        if ($post && $post->post_type == 'attachment')
            $attachments = array($post->ID => $post);
        else
            $attachments = get_children(array('post_parent' => $post_id, 'post_type' => 'attachment', 'orderby' => 'menu_order ASC, ID', 'order' => 'DESC'));
    } else {
        if (is_array($GLOBALS['wp_the_query']->posts))
            foreach ($GLOBALS['wp_the_query']->posts as $attachment)
                $attachments[$attachment->ID] = $attachment;
    }

    $output = '';
    foreach ((array) $attachments as $id => $attachment) {
        if ($attachment->post_status == 'trash')
            continue;
        if ($item = get_media_item($id, array('errors' => isset($errors[$id]) ? $errors[$id] : null)))
            $output .= "\n<div id='media-item-$id' class='media-item child-of-$attachment->post_parent preloaded'><div class='progress hidden'><div class='bar'></div></div><div id='media-upload-error-$id' class='hidden'></div><div class='filename hidden'></div>$item\n</div>";
    }

    return $output;
}

/**
 * Retrieve HTML form for modifying the image attachment.
 *
 * @since 2.5.0
 *
 * @param int $attachment_id Attachment ID for modification.
 * @param string|array $args Optional. Override defaults.
 * @return string HTML form for attachment.
 */
function get_media_item($attachment_id, $args = null) {
    global $redir_tab;

    if (( $attachment_id = intval($attachment_id) ) && $thumb_url = wp_get_attachment_image_src($attachment_id, 'thumbnail', true))
        $thumb_url = $thumb_url[0];
    else
        $thumb_url = false;

    $post = get_post($attachment_id);
    $current_post_id = !empty($_GET['post_id']) ? (int) $_GET['post_id'] : 0;

    $default_args = array('errors' => null, 'send' => $current_post_id ? post_type_supports(get_post_type($current_post_id), 'editor') : true, 'delete' => true, 'toggle' => true, 'show_title' => true);
    $args = wp_parse_args($args, $default_args);
    $args = apply_filters('get_media_item_args', $args);
    extract($args, EXTR_SKIP);

    $toggle_on = __('Show');
    $toggle_off = __('Hide');

    $filename = esc_html(wp_basename($post->guid));
    $title = esc_attr($post->post_title);

    if ($_tags = get_the_tags($attachment_id)) {
        foreach ($_tags as $tag)
            $tags[] = $tag->name;
        $tags = esc_attr(join(', ', $tags));
    }

    $post_mime_types = get_post_mime_types();
    $keys = array_keys(wp_match_mime_types(array_keys($post_mime_types), $post->post_mime_type));
    $type = array_shift($keys);
    $type_html = "<input type='hidden' id='type-of-$attachment_id' value='" . esc_attr($type) . "' />";

    $form_fields = get_attachment_fields_to_edit($post, $errors);

    if ($toggle) {
        $class = empty($errors) ? 'startclosed' : 'startopen';
        $toggle_links = "
	<a class='toggle describe-toggle-on' href='#'>$toggle_on</a>
	<a class='toggle describe-toggle-off' href='#'>$toggle_off</a>";
    } else {
        $class = '';
        $toggle_links = '';
    }

    $display_title = (!empty($title) ) ? $title : $filename; // $title shouldn't ever be empty, but just in case
    $display_title = $show_title ? "<div class='filename new'><span class='title'>" . wp_html_excerpt($display_title, 60) . "</span></div>" : '';

    $gallery = ( ( isset($_REQUEST['tab']) && 'gallery' == $_REQUEST['tab'] ) || ( isset($redir_tab) && 'gallery' == $redir_tab ) );
    $order = '';

    foreach ($form_fields as $key => $val) {
        if ('menu_order' == $key) {
            if ($gallery)
                $order = "<div class='menu_order'> <input class='menu_order_input' type='text' id='attachments[$attachment_id][menu_order]' name='attachments[$attachment_id][menu_order]' value='" . esc_attr($val['value']) . "' /></div>";
            else
                $order = "<input type='hidden' name='attachments[$attachment_id][menu_order]' value='" . esc_attr($val['value']) . "' />";

            unset($form_fields['menu_order']);
            break;
        }
    }

    $media_dims = '';
    $meta = wp_get_attachment_metadata($post->ID);
    if (is_array($meta) && array_key_exists('width', $meta) && array_key_exists('height', $meta))
        $media_dims .= "<span id='media-dims-$post->ID'>{$meta['width']}&nbsp;&times;&nbsp;{$meta['height']}</span> ";
    $media_dims = apply_filters('media_meta', $media_dims, $post);

    $image_edit_button = '';
    if (wp_attachment_is_image($post->ID) && wp_image_editor_supports(array('mime_type' => $post->post_mime_type))) {
        $nonce = wp_create_nonce("image_editor-$post->ID");
        $image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__('Edit Image') . "' /> <span class='spinner'></span>";
    }

    $attachment_url = get_permalink($attachment_id);

    $item = "
	$type_html
	$toggle_links
	$order
	$display_title
	<table class='slidetoggle describe $class'>
		<thead class='media-item-info' id='media-head-$post->ID'>
		<tr valign='top'>
			<td class='A1B1' id='thumbnail-head-$post->ID'>
			<p><a href='$attachment_url' target='_blank'><img class='thumbnail' src='$thumb_url' alt='' /></a></p>
			<p>$image_edit_button</p>
			</td>
			<td>
			<p><strong>" . __('File name:') . "</strong> $filename</p>
			<p><strong>" . __('File type:') . "</strong> $post->post_mime_type</p>
			<p><strong>" . __('Upload date:') . "</strong> " . mysql2date(get_option('date_format'), $post->post_date) . '</p>';
    if (!empty($media_dims))
        $item .= "<p><strong>" . __('Dimensions:') . "</strong> $media_dims</p>\n";

    $item .= "</td></tr>\n";

    $item .= "
		</thead>
		<tbody>
		<tr><td colspan='2' class='imgedit-response' id='imgedit-response-$post->ID'></td></tr>
		<tr><td style='display:none' colspan='2' class='image-editor' id='image-editor-$post->ID'></td></tr>\n";

    $defaults = array(
        'input' => 'text',
        'required' => false,
        'value' => '',
        'extra_rows' => array(),
    );

    if ($send)
        $send = get_submit_button(__('Insert into Post'), 'button', "send[$attachment_id]", false);
    if ($delete && current_user_can('delete_post', $attachment_id)) {
        if (!EMPTY_TRASH_DAYS) {
            $delete = "<a href='" . wp_nonce_url("post.php?action=delete&amp;post=$attachment_id", 'delete-post_' . $attachment_id) . "' id='del[$attachment_id]' class='delete-permanently'>" . __('Delete Permanently') . '</a>';
        } elseif (!MEDIA_TRASH) {
            $delete = "<a href='#' class='del-link' onclick=\"document.getElementById('del_attachment_$attachment_id').style.display='block';return false;\">" . __('Delete') . "</a>
			 <div id='del_attachment_$attachment_id' class='del-attachment' style='display:none;'><p>" . sprintf(__('You are about to delete <strong>%s</strong>.'), $filename) . "</p>
			 <a href='" . wp_nonce_url("post.php?action=delete&amp;post=$attachment_id", 'delete-post_' . $attachment_id) . "' id='del[$attachment_id]' class='button'>" . __('Continue') . "</a>
			 <a href='#' class='button' onclick=\"this.parentNode.style.display='none';return false;\">" . __('Cancel') . "</a>
			 </div>";
        } else {
            $delete = "<a href='" . wp_nonce_url("post.php?action=trash&amp;post=$attachment_id", 'trash-post_' . $attachment_id) . "' id='del[$attachment_id]' class='delete'>" . __('Move to Trash') . "</a>
			<a href='" . wp_nonce_url("post.php?action=untrash&amp;post=$attachment_id", 'untrash-post_' . $attachment_id) . "' id='undo[$attachment_id]' class='undo hidden'>" . __('Undo') . "</a>";
        }
    } else {
        $delete = '';
    }

    $thumbnail = '';
    $calling_post_id = 0;
    if (isset($_GET['post_id']))
        $calling_post_id = absint($_GET['post_id']);
    elseif (isset($_POST) && count($_POST)) // Like for async-upload where $_GET['post_id'] isn't set
        $calling_post_id = $post->post_parent;
    if ('image' == $type && $calling_post_id && current_theme_supports('post-thumbnails', get_post_type($calling_post_id)) && post_type_supports(get_post_type($calling_post_id), 'thumbnail') && get_post_thumbnail_id($calling_post_id) != $attachment_id) {
        $ajax_nonce = wp_create_nonce("set_post_thumbnail-$calling_post_id");
        $thumbnail = "<a class='wp-post-thumbnail' id='wp-post-thumbnail-" . $attachment_id . "' href='#' onclick='WPSetAsThumbnail(\"$attachment_id\", \"$ajax_nonce\");return false;'>" . esc_html__("Use as featured image") . "</a>";
    }

    if (( $send || $thumbnail || $delete ) && !isset($form_fields['buttons']))
        $form_fields['buttons'] = array('tr' => "\t\t<tr class='submit'><td></td><td class='savesend'>$send $thumbnail $delete</td></tr>\n");

    $hidden_fields = array();

    foreach ($form_fields as $id => $field) {
        if ($id[0] == '_')
            continue;

        if (!empty($field['tr'])) {
            $item .= $field['tr'];
            continue;
        }

        $field = array_merge($defaults, $field);
        $name = "attachments[$attachment_id][$id]";

        if ($field['input'] == 'hidden') {
            $hidden_fields[$name] = $field['value'];
            continue;
        }

        $required = $field['required'] ? '<span class="alignright"><abbr title="required" class="required">*</abbr></span>' : '';
        $aria_required = $field['required'] ? " aria-required='true' " : '';
        $class = $id;
        $class .= $field['required'] ? ' form-required' : '';

        $item .= "\t\t<tr class='$class'>\n\t\t\t<th valign='top' scope='row' class='label'><label for='$name'><span class='alignleft'>{$field['label']}</span>$required<br class='clear' /></label></th>\n\t\t\t<td class='field'>";
        if (!empty($field[$field['input']]))
            $item .= $field[$field['input']];
        elseif ($field['input'] == 'textarea') {
            if ('post_content' == $id && user_can_richedit()) {
                // sanitize_post() skips the post_content when user_can_richedit
                $field['value'] = htmlspecialchars($field['value'], ENT_QUOTES);
            }
            // post_excerpt is already escaped by sanitize_post() in get_attachment_fields_to_edit()
            $item .= "<textarea id='$name' name='$name' $aria_required>" . $field['value'] . '</textarea>';
        } else {
            $item .= "<input type='text' class='text' id='$name' name='$name' value='" . esc_attr($field['value']) . "' $aria_required />";
        }
        if (!empty($field['helps']))
            $item .= "<p class='help'>" . join("</p>\n<p class='help'>", array_unique((array) $field['helps'])) . '</p>';
        $item .= "</td>\n\t\t</tr>\n";

        $extra_rows = array();

        if (!empty($field['errors']))
            foreach (array_unique((array) $field['errors']) as $error)
                $extra_rows['error'][] = $error;

        if (!empty($field['extra_rows']))
            foreach ($field['extra_rows'] as $class => $rows)
                foreach ((array) $rows as $html)
                    $extra_rows[$class][] = $html;

        foreach ($extra_rows as $class => $rows)
            foreach ($rows as $html)
                $item .= "\t\t<tr><td></td><td class='$class'>$html</td></tr>\n";
    }

    if (!empty($form_fields['_final']))
        $item .= "\t\t<tr class='final'><td colspan='2'>{$form_fields['_final']}</td></tr>\n";
    $item .= "\t</tbody>\n";
    $item .= "\t</table>\n";

    foreach ($hidden_fields as $name => $value)
        $item .= "\t<input type='hidden' name='$name' id='$name' value='" . esc_attr($value) . "' />\n";

    if ($post->post_parent < 1 && isset($_REQUEST['post_id'])) {
        $parent = (int) $_REQUEST['post_id'];
        $parent_name = "attachments[$attachment_id][post_parent]";
        $item .= "\t<input type='hidden' name='$parent_name' id='$parent_name' value='$parent' />\n";
    }

    return $item;
}

function get_compat_media_markup($attachment_id, $args = null) {
    $post = get_post($attachment_id);

    $default_args = array(
        'errors' => null,
        'in_modal' => false,
    );

    $user_can_edit = current_user_can('edit_post', $attachment_id);

    $args = wp_parse_args($args, $default_args);
    $args = apply_filters('get_media_item_args', $args);

    $form_fields = array();

    if ($args['in_modal']) {
        foreach (get_attachment_taxonomies($post) as $taxonomy) {
            $t = (array) get_taxonomy($taxonomy);
            if (!$t['public'] || !$t['show_ui'])
                continue;
            if (empty($t['label']))
                $t['label'] = $taxonomy;
            if (empty($t['args']))
                $t['args'] = array();

            $terms = get_object_term_cache($post->ID, $taxonomy);
            if (false === $terms)
                $terms = wp_get_object_terms($post->ID, $taxonomy, $t['args']);

            $values = array();

            foreach ($terms as $term)
                $values[] = $term->slug;
            $t['value'] = join(', ', $values);
            $t['taxonomy'] = true;

            $form_fields[$taxonomy] = $t;
        }
    }

    // Merge default fields with their errors, so any key passed with the error (e.g. 'error', 'helps', 'value') will replace the default
    // The recursive merge is easily traversed with array casting: foreach( (array) $things as $thing )
    $form_fields = array_merge_recursive($form_fields, (array) $args['errors']);

    $form_fields = apply_filters('attachment_fields_to_edit', $form_fields, $post);

    unset($form_fields['image-size'], $form_fields['align'], $form_fields['image_alt'], $form_fields['post_title'], $form_fields['post_excerpt'], $form_fields['post_content'], $form_fields['url'], $form_fields['menu_order'], $form_fields['image_url']);

    $media_meta = apply_filters('media_meta', '', $post);

    $defaults = array(
        'input' => 'text',
        'required' => false,
        'value' => '',
        'extra_rows' => array(),
        'show_in_edit' => true,
        'show_in_modal' => true,
    );

    $hidden_fields = array();

    $item = '';
    foreach ($form_fields as $id => $field) {
        if ($id[0] == '_')
            continue;

        $name = "attachments[$attachment_id][$id]";
        $id_attr = "attachments-$attachment_id-$id";

        if (!empty($field['tr'])) {
            $item .= $field['tr'];
            continue;
        }

        $field = array_merge($defaults, $field);

        if ((!$field['show_in_edit'] && !$args['in_modal'] ) || (!$field['show_in_modal'] && $args['in_modal'] ))
            continue;

        if ($field['input'] == 'hidden') {
            $hidden_fields[$name] = $field['value'];
            continue;
        }

        $readonly = !$user_can_edit && !empty($field['taxonomy']) ? " readonly='readonly' " : '';
        $required = $field['required'] ? '<span class="alignright"><abbr title="required" class="required">*</abbr></span>' : '';
        $aria_required = $field['required'] ? " aria-required='true' " : '';
        $class = 'compat-field-' . $id;
        $class .= $field['required'] ? ' form-required' : '';

        $item .= "\t\t<tr class='$class'>";
        $item .= "\t\t\t<th valign='top' scope='row' class='label'><label for='$id_attr'><span class='alignleft'>{$field['label']}</span>$required<br class='clear' /></label>";
        $item .= "</th>\n\t\t\t<td class='field'>";

        if (!empty($field[$field['input']]))
            $item .= $field[$field['input']];
        elseif ($field['input'] == 'textarea') {
            if ('post_content' == $id && user_can_richedit()) {
                // sanitize_post() skips the post_content when user_can_richedit
                $field['value'] = htmlspecialchars($field['value'], ENT_QUOTES);
            }
            $item .= "<textarea id='$id_attr' name='$name' $aria_required>" . $field['value'] . '</textarea>';
        } else {
            $item .= "<input type='text' class='text' id='$id_attr' name='$name' value='" . esc_attr($field['value']) . "' $readonly $aria_required />";
        }
        if (!empty($field['helps']))
            $item .= "<p class='help'>" . join("</p>\n<p class='help'>", array_unique((array) $field['helps'])) . '</p>';
        $item .= "</td>\n\t\t</tr>\n";

        $extra_rows = array();

        if (!empty($field['errors']))
            foreach (array_unique((array) $field['errors']) as $error)
                $extra_rows['error'][] = $error;

        if (!empty($field['extra_rows']))
            foreach ($field['extra_rows'] as $class => $rows)
                foreach ((array) $rows as $html)
                    $extra_rows[$class][] = $html;

        foreach ($extra_rows as $class => $rows)
            foreach ($rows as $html)
                $item .= "\t\t<tr><td></td><td class='$class'>$html</td></tr>\n";
    }

    if (!empty($form_fields['_final']))
        $item .= "\t\t<tr class='final'><td colspan='2'>{$form_fields['_final']}</td></tr>\n";
    if ($item)
        $item = '<table class="compat-attachment-fields">' . $item . '</table>';

    foreach ($hidden_fields as $hidden_field => $value) {
        $item .= '<input type="hidden" name="' . esc_attr($hidden_field) . '" value="' . esc_attr($value) . '" />' . "\n";
    }

    if ($item)
        $item = '<input type="hidden" name="attachments[' . $attachment_id . '][menu_order]" value="' . esc_attr($post->menu_order) . '" />' . $item;

    return array(
        'item' => $item,
        'meta' => $media_meta,
    );
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 */
function media_upload_header() {
    $post_id = isset($_REQUEST['post_id']) ? intval($_REQUEST['post_id']) : 0;
    echo '<script type="text/javascript">post_id = ' . $post_id . ";</script>\n";
    if (empty($_GET['chromeless'])) {
        echo '<div id="media-upload-header">';
        the_media_upload_tabs();
        echo '</div>';
    }
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param unknown_type $errors
 */
function media_upload_form($errors = null) {
    global $type, $tab, $pagenow, $is_IE, $is_opera;

    if (!_device_can_upload()) {
        echo '<p>' . __('The web browser on your device cannot be used to upload files. You may be able to use the <a href="http://wordpress.org/extend/mobile/">native app for your device</a> instead.') . '</p>';
        return;
    }

    $upload_action_url = admin_url('async-upload.php');
    $post_id = isset($_REQUEST['post_id']) ? intval($_REQUEST['post_id']) : 0;
    $_type = isset($type) ? $type : '';
    $_tab = isset($tab) ? $tab : '';

    $upload_size_unit = $max_upload_size = wp_max_upload_size();
    $sizes = array('KB', 'MB', 'GB');

    for ($u = -1; $upload_size_unit > 1024 && $u < count($sizes) - 1; $u++) {
        $upload_size_unit /= 1024;
    }

    if ($u < 0) {
        $upload_size_unit = 0;
        $u = 0;
    } else {
        $upload_size_unit = (int) $upload_size_unit;
    }
    ?>

    <div id="media-upload-notice"><?php
    if (isset($errors['upload_notice']))
        echo $errors['upload_notice'];
    ?></div>
    <div id="media-upload-error"><?php
        if (isset($errors['upload_error']) && is_wp_error($errors['upload_error']))
            echo $errors['upload_error']->get_error_message();
        ?></div>
        <?php
        if (is_multisite() && !is_upload_space_available()) {
            do_action('upload_ui_over_quota');
            return;
        }

        do_action('pre-upload-ui');

        $post_params = array(
            "post_id" => $post_id,
            "_wpnonce" => wp_create_nonce('media-form'),
            "type" => $_type,
            "tab" => $_tab,
            "short" => "1",
        );

        $post_params = apply_filters('upload_post_params', $post_params); // hook change! old name: 'swfupload_post_params'

        $plupload_init = array(
            'runtimes' => 'html5,silverlight,flash,html4',
            'browse_button' => 'plupload-browse-button',
            'container' => 'plupload-upload-ui',
            'drop_element' => 'drag-drop-area',
            'file_data_name' => 'async-upload',
            'multiple_queues' => true,
            'max_file_size' => $max_upload_size . 'b',
            'url' => $upload_action_url,
            'flash_swf_url' => includes_url('js/plupload/plupload.flash.swf'),
            'silverlight_xap_url' => includes_url('js/plupload/plupload.silverlight.xap'),
            'filters' => array(array('title' => __('Allowed Files'), 'extensions' => '*')),
            'multipart' => true,
            'urlstream_upload' => true,
            'multipart_params' => $post_params
        );

// Multi-file uploading doesn't currently work in iOS Safari,
// single-file allows the built-in camera to be used as source for images
        if (wp_is_mobile())
            $plupload_init['multi_selection'] = false;

        $plupload_init = apply_filters('plupload_init', $plupload_init);
        ?>

    <script type="text/javascript">
    <?php
// Verify size is an int. If not return default value.
    $large_size_h = absint(get_option('large_size_h'));
    if (!$large_size_h)
        $large_size_h = 1024;
    $large_size_w = absint(get_option('large_size_w'));
    if (!$large_size_w)
        $large_size_w = 1024;
    ?>
        var resize_height = <?php echo $large_size_h; ?>, resize_width = <?php echo $large_size_w; ?>,
                wpUploaderInit = <?php echo json_encode($plupload_init); ?>;
    </script>

    <div id="plupload-upload-ui" class="hide-if-no-js">
    <?php do_action('pre-plupload-upload-ui'); // hook change, old name: 'pre-flash-upload-ui'  ?>
        <div id="drag-drop-area">
            <div class="drag-drop-inside">
                <p class="drag-drop-info"><?php _e('Drop files here'); ?></p>
                <p><?php _ex('or', 'Uploader: Drop files here - or - Select Files'); ?></p>
                <p class="drag-drop-buttons"><input id="plupload-browse-button" type="button" value="<?php esc_attr_e('Select Files'); ?>" class="button" /></p>
            </div>
        </div>
        <?php do_action('post-plupload-upload-ui'); // hook change, old name: 'post-flash-upload-ui' ?>
    </div>

    <div id="html-upload-ui" class="hide-if-js">
    <?php do_action('pre-html-upload-ui'); ?>
        <p id="async-upload-wrap">
            <label class="screen-reader-text" for="async-upload"><?php _e('Upload'); ?></label>
            <input type="file" name="async-upload" id="async-upload" />
        <?php submit_button(__('Upload'), 'button', 'html-upload', false); ?>
            <a href="#" onclick="try {
                top.tb_remove();
            } catch (e) {
            }
            ;
            return false;"><?php _e('Cancel'); ?></a>
        </p>
        <div class="clear"></div>
            <?php do_action('post-html-upload-ui'); ?>
    </div>

    <span class="max-upload-size"><?php printf(__('Maximum upload file size: %d%s.'), esc_html($upload_size_unit), esc_html($sizes[$u])); ?></span>
            <?php if (($is_IE || $is_opera) && $max_upload_size > 100 * 1024 * 1024) { ?>
        <span class="big-file-warning"><?php _e('Your browser has some limitations uploading large files with the multi-file uploader. Please use the browser uploader for files over 100MB.'); ?></span>
    <?php
    }

    do_action('post-upload-ui');
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param string $type
 * @param object $errors
 * @param integer $id
 */
function media_upload_type_form($type = 'file', $errors = null, $id = null) {

    media_upload_header();

    $post_id = isset($_REQUEST['post_id']) ? intval($_REQUEST['post_id']) : 0;

    $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id");
    $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type);
    $form_class = 'media-upload-form type-form validate';

    if (get_user_setting('uploader'))
        $form_class .= ' html-uploader';
    ?>

    <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form">
    <?php submit_button('', 'hidden', 'save', false); ?>
        <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" />
    <?php wp_nonce_field('media-form'); ?>

        <h3 class="media-title"><?php _e('Add media files from your computer'); ?></h3>

    <?php media_upload_form($errors); ?>

        <script type="text/javascript">
        //<![CDATA[
            jQuery(function($) {
                var preloaded = $(".media-item.preloaded");
                if (preloaded.length > 0) {
                    preloaded.each(function() {
                        prepareMediaItem({id: this.id.replace(/[^0-9]/g, '')}, '');
                    });
                }
                updateMediaForm();
            });
        //]]>
        </script>
        <div id="media-items"><?php
    if ($id) {
        if (!is_wp_error($id)) {
            add_filter('attachment_fields_to_edit', 'media_post_single_attachment_fields_to_edit', 10, 2);
            echo get_media_items($id, $errors);
        } else {
            echo '<div id="media-upload-error">' . esc_html($id->get_error_message()) . '</div></div>';
            exit;
        }
    }
    ?></div>

        <p class="savebutton ml-submit">
            <?php submit_button(__('Save all changes'), 'button', 'save', false); ?>
        </p>
    </form>
            <?php
        }

        /**
         * {@internal Missing Short Description}}
         *
         * @since 2.7.0
         *
         * @param string $type
         * @param object $errors
         * @param integer $id
         */
        function media_upload_type_url_form($type = null, $errors = null, $id = null) {
            if (null === $type)
                $type = 'image';

            media_upload_header();

            $post_id = isset($_REQUEST['post_id']) ? intval($_REQUEST['post_id']) : 0;

            $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id");
            $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type);
            $form_class = 'media-upload-form type-form validate';

            if (get_user_setting('uploader'))
                $form_class .= ' html-uploader';
            ?>

    <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form">
        <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" />
    <?php wp_nonce_field('media-form'); ?>

        <h3 class="media-title"><?php _e('Insert media from another website'); ?></h3>

        <script type="text/javascript">
        //<![CDATA[
            var addExtImage = {
                width: '',
                height: '',
                align: 'alignnone',
                insert: function() {
                    var t = this, html, f = document.forms[0], cls, title = '', alt = '', caption = '';

                    if ('' == f.src.value || '' == t.width)
                        return false;

                    if (f.alt.value)
                        alt = f.alt.value.replace(/'/g, '&#039;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');

    <?php if (!apply_filters('disable_captions', '')) { ?>
                        if (f.caption.value) {
                            caption = f.caption.value.replace(/\r\n|\r/g, '\n');
                            caption = caption.replace(/<[a-zA-Z0-9]+( [^<>]+)?>/g, function(a) {
                                return a.replace(/[\r\n\t]+/, ' ');
                            });

                            caption = caption.replace(/\s*\n\s*/g, '<br />');
                        }
    <?php } ?>

                    cls = caption ? '' : ' class="' + t.align + '"';

                    html = '<img alt="' + alt + '" src="' + f.src.value + '"' + cls + ' width="' + t.width + '" height="' + t.height + '" />';

                    if (f.url.value) {
                        url = f.url.value.replace(/'/g, '&#039;').replace(/"/g, '&quot;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
                        html = '<a href="' + url + '">' + html + '</a>';
                    }

                    if (caption)
                        html = '[caption id="" align="' + t.align + '" width="' + t.width + '"]' + html + caption + '[/caption]';

                    var win = window.dialogArguments || opener || parent || top;
                    win.send_to_editor(html);
                    return false;
                },
                resetImageData: function() {
                    var t = addExtImage;

                    t.width = t.height = '';
                    document.getElementById('go_button').style.color = '#bbb';
                    if (!document.forms[0].src.value)
                        document.getElementById('status_img').innerHTML = '*';
                    else
                        document.getElementById('status_img').innerHTML = '<img src="<?php echo esc_url(admin_url('images/no.png')); ?>" alt="" />';
                },
                updateImageData: function() {
                    var t = addExtImage;

                    t.width = t.preloadImg.width;
                    t.height = t.preloadImg.height;
                    document.getElementById('go_button').style.color = '#333';
                    document.getElementById('status_img').innerHTML = '<img src="<?php echo esc_url(admin_url('images/yes.png')); ?>" alt="" />';
                },
                getImageData: function() {
                    if (jQuery('table.describe').hasClass('not-image'))
                        return;

                    var t = addExtImage, src = document.forms[0].src.value;

                    if (!src) {
                        t.resetImageData();
                        return false;
                    }

                    document.getElementById('status_img').innerHTML = '<img src="<?php echo esc_url(admin_url('images/wpspin_light.gif')); ?>" alt="" width="16" />';
                    t.preloadImg = new Image();
                    t.preloadImg.onload = t.updateImageData;
                    t.preloadImg.onerror = t.resetImageData;
                    t.preloadImg.src = src;
                }
            }

            jQuery(document).ready(function($) {
                $('.media-types input').click(function() {
                    $('table.describe').toggleClass('not-image', $('#not-image').prop('checked'));
                });
            });

        //]]>
        </script>

        <div id="media-items">
            <div class="media-item media-blank">
    <?php echo apply_filters('type_url_form_media', wp_media_insert_url_form($type)); ?>
            </div>
        </div>
    </form>
    <?php
}

/**
 * Adds gallery form to upload iframe
 *
 * @since 2.5.0
 *
 * @param array $errors
 */
function media_upload_gallery_form($errors) {
    global $redir_tab, $type;

    $redir_tab = 'gallery';
    media_upload_header();

    $post_id = intval($_REQUEST['post_id']);
    $form_action_url = admin_url("media-upload.php?type=$type&tab=gallery&post_id=$post_id");
    $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type);
    $form_class = 'media-upload-form validate';

    if (get_user_setting('uploader'))
        $form_class .= ' html-uploader';
    ?>

    <script type="text/javascript">
    <!--
        jQuery(function($) {
            var preloaded = $(".media-item.preloaded");
            if (preloaded.length > 0) {
                preloaded.each(function() {
                    prepareMediaItem({id: this.id.replace(/[^0-9]/g, '')}, '');
                });
                updateMediaForm();
            }
        });
        -- ></script>
    <div id="sort-buttons" class="hide-if-no-js">
        <span>
    <?php _e('All Tabs:'); ?>
            <a href="#" id="showall"><?php _e('Show'); ?></a>
            <a href="#" id="hideall" style="display:none;"><?php _e('Hide'); ?></a>
        </span>
    <?php _e('Sort Order:'); ?>
        <a href="#" id="asc"><?php _e('Ascending'); ?></a> |
        <a href="#" id="desc"><?php _e('Descending'); ?></a> |
        <a href="#" id="clear"><?php _ex('Clear', 'verb'); ?></a>
    </div>
    <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="<?php echo $form_class; ?>" id="gallery-form">
    <?php wp_nonce_field('media-form'); ?>
    <?php //media_upload_form( $errors );  ?>
        <table class="widefat" cellspacing="0">
            <thead><tr>
                    <th><?php _e('Media'); ?></th>
                    <th class="order-head"><?php _e('Order'); ?></th>
                    <th class="actions-head"><?php _e('Actions'); ?></th>
                </tr></thead>
        </table>
        <div id="media-items">
        <?php add_filter('attachment_fields_to_edit', 'media_post_single_attachment_fields_to_edit', 10, 2); ?>
    <?php echo get_media_items($post_id, $errors); ?>
        </div>

        <p class="ml-submit">
    <?php submit_button(__('Save all changes'), 'button savebutton', 'save', false, array('id' => 'save-all', 'style' => 'display: none;')); ?>
            <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" />
            <input type="hidden" name="type" value="<?php echo esc_attr($GLOBALS['type']); ?>" />
            <input type="hidden" name="tab" value="<?php echo esc_attr($GLOBALS['tab']); ?>" />
        </p>

        <div id="gallery-settings" style="display:none;">
            <div class="title"><?php _e('Gallery Settings'); ?></div>
            <table id="basic" class="describe"><tbody>
                    <tr>
                        <th scope="row" class="label">
                            <label>
                                <span class="alignleft"><?php _e('Link thumbnails to:'); ?></span>
                            </label>
                        </th>
                        <td class="field">
                            <input type="radio" name="linkto" id="linkto-file" value="file" />
                            <label for="linkto-file" class="radio"><?php _e('Image File'); ?></label>

                            <input type="radio" checked="checked" name="linkto" id="linkto-post" value="post" />
                            <label for="linkto-post" class="radio"><?php _e('Attachment Page'); ?></label>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row" class="label">
                            <label>
                                <span class="alignleft"><?php _e('Order images by:'); ?></span>
                            </label>
                        </th>
                        <td class="field">
                            <select id="orderby" name="orderby">
                                <option value="menu_order" selected="selected"><?php _e('Menu order'); ?></option>
                                <option value="title"><?php _e('Title'); ?></option>
                                <option value="post_date"><?php _e('Date/Time'); ?></option>
                                <option value="rand"><?php _e('Random'); ?></option>
                            </select>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row" class="label">
                            <label>
                                <span class="alignleft"><?php _e('Order:'); ?></span>
                            </label>
                        </th>
                        <td class="field">
                            <input type="radio" checked="checked" name="order" id="order-asc" value="asc" />
                            <label for="order-asc" class="radio"><?php _e('Ascending'); ?></label>

                            <input type="radio" name="order" id="order-desc" value="desc" />
                            <label for="order-desc" class="radio"><?php _e('Descending'); ?></label>
                        </td>
                    </tr>

                    <tr>
                        <th scope="row" class="label">
                            <label>
                                <span class="alignleft"><?php _e('Gallery columns:'); ?></span>
                            </label>
                        </th>
                        <td class="field">
                            <select id="columns" name="columns">
                                <option value="1">1</option>
                                <option value="2">2</option>
                                <option value="3" selected="selected">3</option>
                                <option value="4">4</option>
                                <option value="5">5</option>
                                <option value="6">6</option>
                                <option value="7">7</option>
                                <option value="8">8</option>
                                <option value="9">9</option>
                            </select>
                        </td>
                    </tr>
                </tbody></table>

            <p class="ml-submit">
                <input type="button" class="button" style="display:none;" onMouseDown="wpgallery.update();" name="insert-gallery" id="insert-gallery" value="<?php esc_attr_e('Insert gallery'); ?>" />
                <input type="button" class="button" style="display:none;" onMouseDown="wpgallery.update();" name="update-gallery" id="update-gallery" value="<?php esc_attr_e('Update gallery settings'); ?>" />
            </p>
        </div>
    </form>
    <?php
}

/**
 * {@internal Missing Short Description}}
 *
 * @since 2.5.0
 *
 * @param array $errors
 */
function media_upload_library_form($errors) {
    global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types;

    media_upload_header();

    $post_id = isset($_REQUEST['post_id']) ? intval($_REQUEST['post_id']) : 0;

    $form_action_url = admin_url("media-upload.php?type=$type&tab=library&post_id=$post_id");
    $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type);
    $form_class = 'media-upload-form validate';

    if (get_user_setting('uploader'))
        $form_class .= ' html-uploader';

    $_GET['paged'] = isset($_GET['paged']) ? intval($_GET['paged']) : 0;
    if ($_GET['paged'] < 1)
        $_GET['paged'] = 1;
    $start = ( $_GET['paged'] - 1 ) * 10;
    if ($start < 1)
        $start = 0;
    add_filter('post_limits', create_function('$a', "return 'LIMIT $start, 10';"));

    list($post_mime_types, $avail_post_mime_types) = wp_edit_attachments_query();
    ?>

    <form id="filter" action="" method="get">
        <input type="hidden" name="type" value="<?php echo esc_attr($type); ?>" />
        <input type="hidden" name="tab" value="<?php echo esc_attr($tab); ?>" />
        <input type="hidden" name="post_id" value="<?php echo (int) $post_id; ?>" />
        <input type="hidden" name="post_mime_type" value="<?php echo isset($_GET['post_mime_type']) ? esc_attr($_GET['post_mime_type']) : ''; ?>" />
        <input type="hidden" name="context" value="<?php echo isset($_GET['context']) ? esc_attr($_GET['context']) : ''; ?>" />

        <p id="media-search" class="search-box">
            <label class="screen-reader-text" for="media-search-input"><?php _e('Search Media'); ?>:</label>
            <input type="search" id="media-search-input" name="s" value="<?php the_search_query(); ?>" />
    <?php submit_button(__('Search Media'), 'button', '', false); ?>
        </p>

        <ul class="subsubsub">
    <?php
    $type_links = array();
    $_num_posts = (array) wp_count_attachments();
    $matches = wp_match_mime_types(array_keys($post_mime_types), array_keys($_num_posts));
    foreach ($matches as $_type => $reals)
        foreach ($reals as $real)
            if (isset($num_posts[$_type]))
                $num_posts[$_type] += $_num_posts[$real];
            else
                $num_posts[$_type] = $_num_posts[$real];
// If available type specified by media button clicked, filter by that type
    if (empty($_GET['post_mime_type']) && !empty($num_posts[$type])) {
        $_GET['post_mime_type'] = $type;
        list($post_mime_types, $avail_post_mime_types) = wp_edit_attachments_query();
    }
    if (empty($_GET['post_mime_type']) || $_GET['post_mime_type'] == 'all')
        $class = ' class="current"';
    else
        $class = '';
    $type_links[] = "<li><a href='" . esc_url(add_query_arg(array('post_mime_type' => 'all', 'paged' => false, 'm' => false))) . "'$class>" . __('All Types') . "</a>";
    foreach ($post_mime_types as $mime_type => $label) {
        $class = '';

        if (!wp_match_mime_types($mime_type, $avail_post_mime_types))
            continue;

        if (isset($_GET['post_mime_type']) && wp_match_mime_types($mime_type, $_GET['post_mime_type']))
            $class = ' class="current"';

        $type_links[] = "<li><a href='" . esc_url(add_query_arg(array('post_mime_type' => $mime_type, 'paged' => false))) . "'$class>" . sprintf(translate_nooped_plural($label[2], $num_posts[$mime_type]), "<span id='$mime_type-counter'>" . number_format_i18n($num_posts[$mime_type]) . '</span>') . '</a>';
    }
    echo implode(' | </li>', apply_filters('media_upload_mime_type_links', $type_links)) . '</li>';
    unset($type_links);
    ?>
        </ul>

        <div class="tablenav">

            <?php
            $page_links = paginate_links(array(
                'base' => add_query_arg('paged', '%#%'),
                'format' => '',
                'prev_text' => __('&laquo;'),
                'next_text' => __('&raquo;'),
                'total' => ceil($wp_query->found_posts / 10),
                'current' => $_GET['paged']
            ));

            if ($page_links)
                echo "<div class='tablenav-pages'>$page_links</div>";
            ?>

            <div class="alignleft actions">
            <?php
            $arc_query = "SELECT DISTINCT YEAR(post_date) AS yyear, MONTH(post_date) AS mmonth FROM $wpdb->posts WHERE post_type = 'attachment' ORDER BY post_date DESC";

            $arc_result = $wpdb->get_results($arc_query);

            $month_count = count($arc_result);

            if ($month_count && !( 1 == $month_count && 0 == $arc_result[0]->mmonth )) {
                ?>
                    <select name='m'>
                        <option<?php selected(@$_GET['m'], 0); ?> value='0'><?php _e('Show all dates'); ?></option>
                    <?php
                    foreach ($arc_result as $arc_row) {
                        if ($arc_row->yyear == 0)
                            continue;
                        $arc_row->mmonth = zeroise($arc_row->mmonth, 2);

                        if (isset($_GET['m']) && ( $arc_row->yyear . $arc_row->mmonth == $_GET['m'] ))
                            $default = ' selected="selected"';
                        else
                            $default = '';

                        echo "<option$default value='" . esc_attr($arc_row->yyear . $arc_row->mmonth) . "'>";
                        echo esc_html($wp_locale->get_month($arc_row->mmonth) . " $arc_row->yyear");
                        echo "</option>\n";
                    }
                    ?>
                    </select>
                    <?php } ?>

                    <?php submit_button(__('Filter &#187;'), 'button', 'post-query-submit', false); ?>

            </div>

            <br class="clear" />
        </div>
    </form>

    <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="<?php echo $form_class; ?>" id="library-form">

                <?php wp_nonce_field('media-form'); ?>
    <?php //media_upload_form( $errors );  ?>

        <script type="text/javascript">

            jQuery(function($) {
                var preloaded = $(".media-item.preloaded");
                if (preloaded.length > 0) {
                    preloaded.each(function() {
                        prepareMediaItem({id: this.id.replace(/[^0-9]/g, '')}, '');
                    });
                    updateMediaForm();
                }
            });

        </script>

        <div id="media-items">
    <?php add_filter('attachment_fields_to_edit', 'media_post_single_attachment_fields_to_edit', 10, 2); ?>
    <?php echo get_media_items(null, $errors); ?>
        </div>
        <p class="ml-submit">
    <?php submit_button(__('Save all changes'), 'button savebutton', 'save', false); ?>
            <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" />
        </p>
    </form>
    <?php
}

/**
 * Creates the form for external url
 *
 * @since 2.7.0
 *
 * @param string $default_view
 * @return string the form html
 */
function wp_media_insert_url_form($default_view = 'image') {
    if (!apply_filters('disable_captions', '')) {
        $caption = '
		<tr class="image-only">
			<th valign="top" scope="row" class="label">
				<label for="caption"><span class="alignleft">' . __('Image Caption') . '</span></label>
			</th>
			<td class="field"><textarea id="caption" name="caption"></textarea></td>
		</tr>
';
    } else {
        $caption = '';
    }

    $default_align = get_option('image_default_align');
    if (empty($default_align))
        $default_align = 'none';

    if ('image' == $default_view) {
        $view = 'image-only';
        $table_class = '';
    } else {
        $view = $table_class = 'not-image';
    }

    return '
	<p class="media-types"><label><input type="radio" name="media_type" value="image" id="image-only"' . checked('image-only', $view, false) . ' /> ' . __('Image') . '</label> &nbsp; &nbsp; <label><input type="radio" name="media_type" value="generic" id="not-image"' . checked('not-image', $view, false) . ' /> ' . __('Audio, Video, or Other File') . '</label></p>
	<table class="describe ' . $table_class . '"><tbody>
		<tr>
			<th valign="top" scope="row" class="label" style="width:130px;">
				<label for="src"><span class="alignleft">' . __('URL') . '</span></label>
				<span class="alignright"><abbr id="status_img" title="required" class="required">*</abbr></span>
			</th>
			<td class="field"><input id="src" name="src" value="" type="text" aria-required="true" onblur="addExtImage.getImageData()" /></td>
		</tr>

		<tr>
			<th valign="top" scope="row" class="label">
				<label for="title"><span class="alignleft">' . __('Title') . '</span></label>
				<span class="alignright"><abbr title="required" class="required">*</abbr></span>
			</th>
			<td class="field"><input id="title" name="title" value="" type="text" aria-required="true" /></td>
		</tr>

		<tr class="not-image"><td></td><td><p class="help">' . __('Link text, e.g. &#8220;Ransom Demands (PDF)&#8221;') . '</p></td></tr>

		<tr class="image-only">
			<th valign="top" scope="row" class="label">
				<label for="alt"><span class="alignleft">' . __('Alternative Text') . '</span></label>
			</th>
			<td class="field"><input id="alt" name="alt" value="" type="text" aria-required="true" />
			<p class="help">' . __('Alt text for the image, e.g. &#8220;The Mona Lisa&#8221;') . '</p></td>
		</tr>
		' . $caption . '
		<tr class="align image-only">
			<th valign="top" scope="row" class="label"><p><label for="align">' . __('Alignment') . '</label></p></th>
			<td class="field">
				<input name="align" id="align-none" value="none" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'none' ? ' checked="checked"' : '') . ' />
				<label for="align-none" class="align image-align-none-label">' . __('None') . '</label>
				<input name="align" id="align-left" value="left" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'left' ? ' checked="checked"' : '') . ' />
				<label for="align-left" class="align image-align-left-label">' . __('Left') . '</label>
				<input name="align" id="align-center" value="center" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'center' ? ' checked="checked"' : '') . ' />
				<label for="align-center" class="align image-align-center-label">' . __('Center') . '</label>
				<input name="align" id="align-right" value="right" onclick="addExtImage.align=\'align\'+this.value" type="radio"' . ($default_align == 'right' ? ' checked="checked"' : '') . ' />
				<label for="align-right" class="align image-align-right-label">' . __('Right') . '</label>
			</td>
		</tr>

		<tr class="image-only">
			<th valign="top" scope="row" class="label">
				<label for="url"><span class="alignleft">' . __('Link Image To:') . '</span></label>
			</th>
			<td class="field"><input id="url" name="url" value="" type="text" /><br />

			<button type="button" class="button" value="" onclick="document.forms[0].url.value=null">' . __('None') . '</button>
			<button type="button" class="button" value="" onclick="document.forms[0].url.value=document.forms[0].src.value">' . __('Link to image') . '</button>
			<p class="help">' . __('Enter a link URL or click above for presets.') . '</p></td>
		</tr>
		<tr class="image-only">
			<td></td>
			<td>
				<input type="button" class="button" id="go_button" style="color:#bbb;" onclick="addExtImage.insert()" value="' . esc_attr__('Insert into Post') . '" />
			</td>
		</tr>
		<tr class="not-image">
			<td></td>
			<td>
				' . get_submit_button(__('Insert into Post'), 'button', 'insertonlybutton', false) . '
			</td>
		</tr>
	</tbody></table>
';
}

/**
 * Displays the multi-file uploader message.
 *
 * @since 2.6.0
 */
function media_upload_flash_bypass() {
    $browser_uploader = admin_url('media-new.php?browser-uploader');

    if ($post = get_post())
        $browser_uploader .= '&amp;post_id=' . intval($post->ID);
    elseif (!empty($GLOBALS['post_ID']))
        $browser_uploader .= '&amp;post_id=' . intval($GLOBALS['post_ID']);
    ?>
    <p class="upload-flash-bypass">
    <?php printf(__('You are using the multi-file uploader. Problems? Try the <a href="%1$s" target="%2$s">browser uploader</a> instead.'), $browser_uploader, '_blank'); ?>
    </p>
    <?php
}

add_action('post-plupload-upload-ui', 'media_upload_flash_bypass');

/**
 * Displays the browser's built-in uploader message.
 *
 * @since 2.6.0
 */
function media_upload_html_bypass() {
    ?>
    <p class="upload-html-bypass hide-if-no-js">
    <?php _e('You are using the browser&#8217;s built-in file uploader. The WordPress uploader includes multiple file selection and drag and drop capability. <a href="#">Switch to the multi-file uploader</a>.'); ?>
    </p>
    <?php
}

add_action('post-html-upload-ui', 'media_upload_html_bypass');

/**
 * Used to display a "After a file has been uploaded..." help message.
 *
 * @since 3.3.0
 */
function media_upload_text_after() {
    
}

/**
 * Displays the checkbox to scale images.
 *
 * @since 3.3.0
 */
function media_upload_max_image_resize() {
    $checked = get_user_setting('upload_resize') ? ' checked="true"' : '';
    $a = $end = '';

    if (current_user_can('manage_options')) {
        $a = '<a href="' . esc_url(admin_url('options-media.php')) . '" target="_blank">';
        $end = '</a>';
    }
    ?>
    <p class="hide-if-no-js"><label>
            <input name="image_resize" type="checkbox" id="image_resize" value="true"<?php echo $checked; ?> />
    <?php
    /* translators: %1$s is link start tag, %2$s is link end tag, %3$d is width, %4$d is height */
    printf(__('Scale images to match the large size selected in %1$simage options%2$s (%3$d &times; %4$d).'), $a, $end, (int) get_option('large_size_w', '1024'), (int) get_option('large_size_h', '1024'));
    ?>
        </label></p>
    <?php
}

/**
 * Displays the out of storage quota message in Multisite.
 *
 * @since 3.5.0
 */
function multisite_over_quota_message() {
    echo '<p>' . sprintf(__('Sorry, you have used all of your storage quota of %s MB.'), get_space_allowed()) . '</p>';
}

/**
 * Displays the image and editor in the post editor
 *
 * @since 3.5.0
 */
function edit_form_image_editor() {
    $post = get_post();

    $open = isset($_GET['image-editor']);
    if ($open)
        require_once ABSPATH . 'wp-admin/includes/image-edit.php';

    $thumb_url = false;
    if ($attachment_id = intval($post->ID))
        $thumb_url = wp_get_attachment_image_src($attachment_id, array(900, 450), true);

    $filename = esc_html(basename($post->guid));
    $title = esc_attr($post->post_title);
    $alt_text = get_post_meta($post->ID, '_wp_attachment_image_alt', true);

    $att_url = wp_get_attachment_url($post->ID);

    if (wp_attachment_is_image($post->ID)) :
        $image_edit_button = '';
        if (wp_image_editor_supports(array('mime_type' => $post->post_mime_type))) {
            $nonce = wp_create_nonce("image_editor-$post->ID");
            $image_edit_button = "<input type='button' id='imgedit-open-btn-$post->ID' onclick='imageEdit.open( $post->ID, \"$nonce\" )' class='button' value='" . esc_attr__('Edit Image') . "' /> <span class='spinner'></span>";
        }
        ?>
        <div class="wp_attachment_holder">
            <div class="imgedit-response" id="imgedit-response-<?php echo $attachment_id; ?>"></div>

            <div<?php if ($open) echo ' style="display:none"'; ?> class="wp_attachment_image" id="media-head-<?php echo $attachment_id; ?>">
                <p id="thumbnail-head-<?php echo $attachment_id; ?>"><img class="thumbnail" src="<?php echo set_url_scheme($thumb_url[0]); ?>" style="max-width:100%" alt="" /></p>
                <p><?php echo $image_edit_button; ?></p>
            </div>
            <div<?php if (!$open) echo ' style="display:none"'; ?> class="image-editor" id="image-editor-<?php echo $attachment_id; ?>">
        <?php if ($open) wp_image_editor($attachment_id); ?>
            </div>
        </div>
    <?php endif; ?>

    <div class="wp_attachment_details">
        <p>
            <label for="attachment_caption"><strong><?php _e('Caption'); ?></strong></label><br />
            <textarea class="widefat" name="excerpt" id="attachment_caption"><?php echo $post->post_excerpt; ?></textarea>
        </p>

    <?php if ('image' === substr($post->post_mime_type, 0, 5)) : ?>
            <p>
                <label for="attachment_alt"><strong><?php echo 'URL botón Comprar'; //_e( 'Alternative Text' );  ?></strong></label><br />
                <input type="text" class="widefat" name="_wp_attachment_image_alt" id="attachment_alt" value="<?php echo esc_attr($alt_text); ?>" />
            </p>
    <?php endif; ?>

        <?php
        $quicktags_settings = array('buttons' => 'strong,em,link,block,del,ins,img,ul,ol,li,code,spell,close');
        $editor_args = array(
            'textarea_name' => 'content',
            'textarea_rows' => 5,
            'media_buttons' => false,
            'tinymce' => false,
            'quicktags' => $quicktags_settings,
        );
        ?>

        <label for="content"><strong><?php _e('Description'); ?></strong></label>
        <?php wp_editor($post->post_content, 'attachment_content', $editor_args); ?>

    </div>
        <?php
        $extras = get_compat_media_markup($post->ID);
        echo $extras['item'];
        echo '<input type="hidden" id="image-edit-context" value="edit-attachment" />' . "\n";
    }

    /**
     * Displays non-editable attachment metadata in the publish metabox
     *
     * @since 3.5.0
     */
    function attachment_submitbox_metadata() {
        $post = get_post();

        $filename = esc_html(basename($post->guid));

        $media_dims = '';
        $meta = wp_get_attachment_metadata($post->ID);
        if (is_array($meta) && array_key_exists('width', $meta) && array_key_exists('height', $meta))
            $media_dims .= "<span id='media-dims-$post->ID'>{$meta['width']}&nbsp;&times;&nbsp;{$meta['height']}</span> ";
        $media_dims = apply_filters('media_meta', $media_dims, $post);

        $att_url = wp_get_attachment_url($post->ID);
        ?>
    <div class="misc-pub-section">
        <label for="attachment_url"><?php _e('File URL:'); ?></label>
        <input type="text" class="widefat urlfield" readonly="readonly" name="attachment_url" value="<?php echo esc_attr($att_url); ?>" />
    </div>
    <div class="misc-pub-section">
    <?php _e('File name:'); ?> <strong><?php echo $filename; ?></strong>
    </div>
    <div class="misc-pub-section">
    <?php _e('File type:'); ?> <strong><?php
    if (preg_match('/^.*?\.(\w+)$/', get_attached_file($post->ID), $matches))
        echo esc_html(strtoupper($matches[1]));
    else
        echo strtoupper(str_replace('image/', '', $post->post_mime_type));
    ?></strong>
    </div>

        <?php if ($media_dims) : ?>
        <div class="misc-pub-section">
                <?php _e('Dimensions:'); ?> <strong><?php echo $media_dims; ?></strong>
        </div>
                <?php
            endif;
        }

        add_filter('async_upload_image', 'get_media_item', 10, 2);
        add_filter('async_upload_audio', 'get_media_item', 10, 2);
        add_filter('async_upload_video', 'get_media_item', 10, 2);
        add_filter('async_upload_file', 'get_media_item', 10, 2);

        add_action('media_upload_image', 'wp_media_upload_handler');
        add_action('media_upload_audio', 'wp_media_upload_handler');
        add_action('media_upload_video', 'wp_media_upload_handler');
        add_action('media_upload_file', 'wp_media_upload_handler');

        add_filter('media_upload_gallery', 'media_upload_gallery');
        add_filter('media_upload_library', 'media_upload_library');

        add_action('attachment_submitbox_misc_actions', 'attachment_submitbox_metadata');

        